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'9. In liana out that the conduction (Le.: free) electrons inside metals are highly degenerate (since Ithe !Humber of electrons per unit volume it voy large, and ). Indeed, most ineta:s are hard to compress S24 a direct consamenee of the high degeneracy pressure of their conduction electrons. Por example, the number density of free electrons in magnesium
in a tape recorder the magnetic tape moves at a constant linear speed of 3.51 cms. to maintain this constant linear
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. what beat frequency is heard when the hammer strikes the two strings simultaneously
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to six times the earth's radius of 6.38 106 m. . (b) Find the satellite's orbital period.
A heat engine takes in 126 kJ of heat from a reservoir at 820 K and exhausts 88 kJ to a reservoir at 292 K. What is the efficiency of an ideal engine operating between the same two reservoirs
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. If the outer radius is 1.39 cm, how fast does the hanging mass rise
Estimate the shear stress if this force is ex- erted on a 0.412 cm -thick pine board that is 13.7 cm wide
a blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.4 ms2. a
A 200 kg object and a 500 kg object are separated by 1.2 m. A 150 kg object is placed half way between the two objects, What is the gravitational potential energy of the three masses
Torque can be calculated by multiplying the force (N) applied at 90 degrees to the lever arm at a distance (m) from the pivot point (point of rotation), what is the torque on the lever
in many locations such as lake washington in seattle floating bridges are preferable to conventional bridges. such a
the surface charge density on an infinite charged plane is -2.30 10-6 cm2. a proton is shot straight away from the
A piece of aluminum has density 2.70g/cm 3 and mass775 g. The aluminum is submerged in a container of oil of density 0.650 g/cm3.How much oil does the metal displace? A solid rock, suspended in air by a spring scale, has a gauged mass of 9.0 kg. Whe..
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